It followed an alert by a French supplier, Comigel, which is understood to have reported that some of its ingredients did "not conform" to the product specification.

BBC: Asda withdraws frozen burger range supplied by NI company

We should certainly not be introducing product that's not recognised and approved as part of that specification.

BBC: Burgers

"The burger product was specifically produced for the UK market and was made to a specification for EU beef from EU approved suppliers, " the company said.

BBC: Burgers made in an Irish factory are being recalled